egoist
n.
1763, in metaphysics, "one who maintains there is no evidence of the existence of anything but the self" (taking ego in a sense of "thinking subject"), from French égoiste (1755); see ego + -ist. Meaning "selfish person" is from 1879. Related: Egoistic; egoistical.
〔李〕[ego;-istn.] n.自我主义者,自私自利的人 ←ego (L ego)=I 我
〔蒋〕[ego自我,-ist者] 自我主义者,利已主义者